Alkyl halides can participate in both S_(N^(1)) and S_(N^(2)) reactions depending upon their anture and conditions. The reactivity order in the three types of alkyl halides is the reverse in S_(N^(1)) reactions than what we observe in S_(N^(2)) reactions. Apart from that, there is inversion of configuration in case of alkyl halides when they participate in S_(N^(2)) reactions. on the other hand, partial or complete racemisation occurs in S_(N^(1)) reactions. Q. An optically active halide when allowed to react with CN^(-), gives a racemic mixture. the halide is most likely to be: primary

Alkyl halides can participate in both S_(N^(1)) and S_(N^(2)) reaction

1.	Alkyl halides can participate in both S_(N^(1)) and S_(N^(2)) reactions depending upon their anture and conditions. The reactivity order in the three types of alkyl halides is the reverse in S_(N^(1)) reactions than what we observe in S_(N^(2)) reactions. Apart from that, there is inversion of configuration in case of alkyl halides when they participate in S_(N^(2)) reactions. on the other hand, partial or complete racemisation occurs in S_(N^(1)) reactions. Q. An optically active halide when allowed to react with CN^(-), gives a racemic mixture. the halide is most likely to be: primary
Answer» secondary TERTIARY none of these Solution :OPTICALLY active tertiary alkyl halides GIVE racemix mixture by PARTICIPATING in `S_(N^(1))` reactions.